Set up a test of the hypothesis that the mean difference

Assignment Help Basic Statistics

Reference no: EM13634924

Researchers conducted an experiment in which hydrogen concentration in 20 different specimens was measured by gas chromatography and by a new sensor method. They want to test whether the two methods give essentially the same measurement.

(a) Explain why this is a matched pair/dependent sample experiment.

(b) Use the statistical summary for the difference of measurements to construct a 99% confidence interval for the mean difference between the two methods.

Mean	1.5
Sample Standard Deviation	6.661
Sample Variance	44.368
Minimum	-14
Maximum	13
Count	20

(c) Set up a test of the hypothesis that the mean difference between methods is 0. (State the null and alternate hypotheses.)

(d) Compute the observed value of the test statistic.

(e) Conduct the hypothesis test and state the decision and conclusion.

Reference no: EM13634924

Questions Cloud

I also suspect that the effect of average sentence lengths : 1 although crime rates in the u.s. are generally falling in the past much has been written about the relative

Let x and y be independent exponential random variables : let x and y be independent exponential random variables with means 2 and 3 respectively. let zxy. determine

One concern in the evaluation of research results is that : one concern in the evaluation of research results is that the subjects in one treatment condition may be substantially

A delegation of 3 is selected from a city council made up : a delegation of 3 is selected from a city council made up of 4 liberals and 5 conservatives. what is the expected

Set up a test of the hypothesis that the mean difference : researchers conducted an experiment in which hydrogen concentration in 20 different specimens was measured by gas

Use the mann-whitney table to find the critical values for : use the mann-whitney table to find the critical values. for a left -tailed or two-tailed test you will alsoneed the

How large of a sample size do we need to estimate the mean : how large of a sample size do we need to estimate the mean annual income of native americans in onondaga county new

Which of the following is a valid objective function for a : which of the following is a valid objective function for a linear programming problem?max 5x33y3min 1x 3y3max 5x2

If the mean per capita income in the us is 39000 and the : if the mean per capita income in the u.s. is 39000 and the standard deviation is 5000. what percent of the

User Account

All Pages